<script setup>
import {Edit,Delete} from '@element-plus/icons-vue';
import { ref } from 'vue';
import {Plus} from '@element-plus/icons-vue'
//封装请求接口
import { getApi, postApi,searchData ,updateApi,insertApi,deleteApi} from '@/axios/http.js'
import { ElMessage,ElMessageBox} from 'element-plus';
//导入token
import {useTokenStore} from '@/stor/token.js'
//安装、导入富文本编辑器以及样式
import { QuillEditor } from '@vueup/vue-quill'
import '@vueup/vue-quill/dist/vue-quill.snow.css'
const tokenStore = useTokenStore();

//控制弹窗显示
const visibleDrawer = ref(false);
//弹窗标题
const title=ref('');
//文章分类id
const categoryId = ref('');
//文章发布状态
const state= ref('');
//文章分类
const categorys = ref([]);
//当前页码
const pageNum = ref(1);
//每页条数
const pageSize = ref(3);
//总条数
const total = ref(0)
// 文章列表数据
const articles = ref([]);
//获取文章分类信息
const getCategorysList = async ()=>{
      await getApi("/category/list",null,null).then(res=>{
            if(res.code === 0 ){
                categorys.value = res.data 
            }
      })
};
getCategorysList();

//获取列表数据参数
const params=ref({
    pageSize:0,
    pageNum:0,
    categoryId:'',
    state:''
});
//请求列表
const articleList = async()=>{
      params.value.pageSize = pageSize.value;
      params.value.pageNum = pageNum.value;
      params.value.categoryId = categoryId.value?categoryId.value:null;
      params.value.state = state.value?state.value:null;
      await getApi("/article/pageList",params.value,null).then(res=>{
            if(0 === res.code){
                articles.value = res.data.items;
                total.value = res.data.total;
            }
      })    
} 
articleList();
//改变每页条数
const onSizeChange = (val) => {
    pageSize.value = val;
    console.log(`${val} items per page`);
    articleList();
}
//第几页
const onCurrentChange = (val) => {
    pageNum.value = val
    console.log(`current page: ${val}`);
    articleList();
}
//添加数据分类模型
const articleModel = ref({
    title:'',
    categoryId:'',
    coverImg:'',
    content:'',
    state:''
})



//清除表单数据
const clearData = ()=>{
    articleModel.value.title='';
    articleModel.value.categoryId='';
    articleModel.value.coverImg='';
    //editor是富文本，要置空整个html
    articleModel.value.content='<p></p>';
}
//编辑弹窗
const showDrawer=(row)=>{
    visibleDrawer.value = true;
    title.value='编辑文章';
    articleModel.value.title=row.title;
    articleModel.value.categoryId=row.categoryId;
    articleModel.value.coverImg=row.coverImg;
    articleModel.value.content=row.content;
    //编辑要添加id
    articleModel.value.id=row.id;
}

//删除数据
const deleteArticle= (row)=>{
    ElMessageBox.confirm(
    '确认要删除吗?',
    '提示',
    {
      confirmButtonText: '确认',
      cancelButtonText: '取消',
      type: 'warning',
    }
  )
    .then(() => {
      
      deleteApi("/article/delete",{id:row.id},null).then(res=>{
          if(0 === res.code){
            ElMessage({
               type: 'success',
               message: res.message ? res.message :'删除成功',
            });
            //完成后刷新列表
            articleList();
          }
      })  
      
    })
    .catch(() => {
      ElMessage({
        type: 'info',
        message: '取消删除',
      })
    })
}

//添加文章
const addArticle= async(val)=>{
    articleModel.value.state=val;
    const header="application/json";
    await insertApi("/article/add",articleModel.value,header).then(res=>{
          if(0 === res.code){
            ElMessage.success(res.message ? res.message : '添加成功');
            //刷新列表
            articleList();
            //关闭弹窗
            visibleDrawer.value = false;
          }
    })
}
//更新文章
const updateArticle= async (val)=>{
    articleModel.value.state=val;
    const header="application/json";
    await updateApi("/article/update",articleModel.value,header).then(res=>{
          if(0 === res.code){
            ElMessage.success(res.message ? res.message : '更新成功');
            //刷新列表
            articleList();
            //关闭弹窗
            visibleDrawer.value = false;
            articleModel.value.id=''
          }
    })
}
//上传图片成功的回调函数
const uploadSuccess=(response) => {
    articleModel.value.coverImg = response.data
}
</script>
<template>
     <el-card class="page-container">
        <template #header>
            <div class="header">
                <span><strong>文章管理</strong></span>
                <div class="extra">
                    <el-button type="primary" @click="visibleDrawer=true;title='添加文章';clearData()">添加文章</el-button>
                </div>
            </div>
        </template> 
        <!-- 搜索表单 -->
        <el-form inline>
            <el-form-item label="文章分类：">
                <el-select placeholder="请选择" v-model="categoryId" style="width:240px">
                    <el-option 
                        v-for="c in categorys" 
                        :key="c.id" 
                        :label="c.categoryName"
                        :value="c.id">
                    </el-option>
                </el-select>
            </el-form-item>

            <el-form-item label="发布状态：" style="width:240px">
                <el-select placeholder="请选择" v-model="state">
                    <el-option label="已发布" value="已发布"></el-option>
                    <el-option label="草稿" value="草稿"></el-option>
                </el-select>
            </el-form-item>
            <el-form-item>
                <el-button type="primary" @click="articleList">搜索</el-button>
                <el-button @click="categoryId='', state=''">重置</el-button>
            </el-form-item>
        </el-form> 
        <!-- 文章列表 -->
        <el-table :data="articles" style="width: 100%">
            <el-table-column label="文章标题" width="400" prop="title"></el-table-column>
            <el-table-column label="分类" prop="categoryName"></el-table-column>
            <el-table-column label="发表时间" prop="createTime"> </el-table-column>
            <el-table-column label="状态" prop="state"></el-table-column>
            <el-table-column label="操作" width="100">
                <template #default="{ row }">
                    <el-button :icon="Edit" circle plain type="primary" @click="showDrawer(row)"></el-button>
                    <el-button :icon="Delete" circle plain type="danger" @click="deleteArticle(row)"></el-button>
                </template>
            </el-table-column>
            <template #empty>
                <el-empty description="没有数据" />
            </template>
        </el-table> 
        <!-- 分页条 -->
        <el-pagination v-model:current-page="pageNum" v-model:page-size="pageSize" :page-sizes="[3, 5 ,10, 15]"
            layout="jumper, total, sizes, prev, pager, next" background :total="total" @size-change="onSizeChange"
            @current-change="onCurrentChange" style="margin-top: 20px; justify-content: flex-end" /> 

        <!-- 抽屉 -->
        <el-drawer v-model="visibleDrawer" :title="title" direction="rtl" size="50%">
            <!-- 添加文章表单 -->
            <el-form :model="articleModel" label-width="100px" >
                <el-form-item label="文章标题" >
                    <el-input v-model="articleModel.title" placeholder="请输入标题"></el-input>
                </el-form-item>
                <el-form-item label="文章分类">
                    <el-select placeholder="请选择" v-model="articleModel.categoryId">
                        <el-option v-for="c in categorys" :key="c.id" :label="c.categoryName" :value="c.id">
                        </el-option>
                    </el-select>
                </el-form-item>
                <el-form-item label="文章封面">
                     <!--
                        auto-upload:设置是否自动上传
                        action:设置服务器接口路径
                        name:设置上传的文件字段名
                        headers:设置上传的请求头
                        on-success:设置上传成功的回调函数
                     -->
                    <el-upload class="avatar-uploader" :auto-upload="true" :show-file-list="false" action="/api/upload" 
                    name="file"
                    :headers="{'Authorization':tokenStore.token}"
                    :on-success="uploadSuccess">
                        <img v-if="articleModel.coverImg" :src="articleModel.coverImg" class="avatar" />
                        <el-icon v-else class="avatar-uploader-icon">
                            <Plus />
                        </el-icon>
                    </el-upload>
                </el-form-item>
                <el-form-item label="文章内容">
                    <div class="editor">
                        <quill-editor theme="snow" v-model:content="articleModel.content" contentType="html">
                        </quill-editor>
                    </div>
                </el-form-item>
                <el-form-item>
                    <el-button type="primary" @click="title=='添加文章'? addArticle('已发布'):updateArticle('已发布')">发布</el-button>
                    <el-button type="info" @click="title=='添加文章'? addArticle('草稿'):updateArticle('草稿')">草稿</el-button>
                </el-form-item>
            </el-form>
        </el-drawer>
    </el-card> 
    
</template>
<style lang="scss" scoped>
.page-container {
    min-height: 100%;
    box-sizing: border-box;

    .header {
        display: flex;
        align-items: center;
        justify-content: space-between;
    }
}
/* 抽屉样式 */
.avatar-uploader {
    :deep() {
        .avatar {
            width: 178px;
            height: 178px;
            display: block;
        }

        .el-upload {
            border: 1px dashed var(--el-border-color);
            border-radius: 6px;
            cursor: pointer;
            position: relative;
            overflow: hidden;
            transition: var(--el-transition-duration-fast);
        }

        .el-upload:hover {
            border-color: var(--el-color-primary);
        }

        .el-icon.avatar-uploader-icon {
            font-size: 28px;
            color: #8c939d;
            width: 178px;
            height: 178px;
            text-align: center;
        }
    }
}
.editor {
  width: 100%;
  :deep(.ql-editor) {
    min-height: 200px;
  }
}
</style>